I knew updating (2 weeks ago, responding to bberry invitation) would be a mistake. Now I can't scroll the calendar to the right or left. If I go all the way to the top and highlight the days of week on calendar, then it scrolls horizontally but only 5 days at a time.

Do you mean you upgraded your OS? If you want to go back to the previous one, you can use JL_Cmder to wipe your Berry and reload the previous OS. You would have to download the previous OS and install it on your computer, wipe with JL_Cmder, then load the OS onto your Berry through Desktop Manager.